Hi,
I accidentally deleted all the content of my /proto folder, if i'm not wrong it contains only another folder called SmX_webui.
Is there a way to restore it?
I have also a MBWE single disk (always white light), so I can recover files from there if necessary.

Yes it contains only one folder : SxM_webui
You shoulde be able to copy it from you other single drive WhiteLight.

I don't know what you will have to do after that : I suppose nothing (except change your parameters in webUI) or may be an upgrade.
If you need an upgrade then you will need to re-install all your packages but not your data's

If you cannot upgrade because you allready have the latest firmware then change "etc/version" to an older number "01.01.16" for example.
If nothing of that works then do a manual firmware upgardehttp://mybookworld.wikidot.com/forum/t-163874/

I tried to simply use the single drive folder, but it didn't work; so i run the manual firmware upgrade and it restore the web interface.
The data share failed, but I had only a backup on it so i recreate it by the interface and it now works.

There is only a last problem: i have just do the above operations and installed the "featurepacks manager" by highlevelbits, i haven't yet set anything else; sometimes the unit freezes (with the bottom led on) and i can only shutdown and reboot it…